Cap separating device

Abstract

The utility model provides a cover separating device, which comprises a seat body connected below a cover body feed opening and provided with a lower cover hole communicated with the cover body feed opening; the annular rotating disc is rotatably arranged in the seat body; the cover separating structure is arranged on the seat body in a swinging manner, the cover separating structure comprises a cover separating main body as well as an upper cutting sheet and a lower cutting sheet which are arranged on the cover separating main body, the upper cutting sheet and the lower cutting sheet are arranged at intervals in the vertical direction in a staggered manner, and the annular rotating disc rotates to drive the cover separating structure to swing, so that the upper cutting sheet and the lower cutting sheet can extend into the lower cover hole; the driving part drives the annular rotating disc to rotate; the antifriction ring is arranged in the seat body and is positioned between the inner side wall of the seat body and the annular rotating disc; and the observation opening is formed in the seat body and is communicated with the interior of the seat body. According to the technical scheme, the problem that in the related technology, metal chippings generated by friction between the annular rotating disc and the base body fall into produced products, and the percent of pass of the produced products is easily affected is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of lid separating equipment, and more specifically, to a lid separating device. Background Art

[0002] Multiple stacked lids fall downward from the lid discharging opening. The lid separating device is arranged below the lid discharging opening. Through the lid separating operation of the lid separating device, the stacked lids can fall one by one successively, so as to facilitate the subsequent process for taking.

[0003] The lid separating device includes a base body connected below the lid discharging opening, an annular rotating disk rotatably arranged in the base body, a lid separating structure swingably arranged on the base body, and a driving member for driving the annular rotating disk to rotate. The driving member drives the annular rotating disk to rotate, so as to drive the lid separating structure to swing through the annular rotating disk. The lid separating structure swings to separate the multiple stacked lids into single lids, and the single lids can fall under the action of their own gravity.

[0004] In the patent with the authorized announcement number of CN207806428U in the utility model patent in the related art, a structure for separately separating several stacked circular metal can bottom lids is shown. Since its base body and annular rotating disk are in direct contact and are both metal parts, after the lid separating device is used for a long time, when the annular rotating disk rotates in the base body, it is easy to generate metal debris due to the friction between the annular rotating disk and the base body. The metal debris drops into the produced products, affecting the qualification rate of the produced products. Utility Model Content

[0005] The main purpose of the present utility model is to provide a lid separating device to solve the problem that the metal debris generated by the friction between the annular rotating disk and the base body in the related art drops into the produced products, which easily affects the qualification rate of the produced products.

[0006] To achieve the above purpose, the present utility model provides a lid separating device arranged below the lid discharging opening. The lid separating device includes: a base body connected below the lid discharging opening, the base body having a lower lid hole communicating with the lid discharging opening; an annular rotating disk rotatably arranged in the base body; a lid separating structure swingably arranged on the base body, the lid separating structure including a lid separating main body and an upper slicing piece and a lower slicing piece arranged on the lid separating main body, the upper slicing piece and the lower slicing piece being spaced apart and staggered in the up-down direction, the annular rotating disk rotates to drive the lid separating structure to swing, so that the upper slicing piece and the lower slicing piece can extend into the lower lid hole; a driving member for driving the annular rotating disk to rotate; a friction reducing ring arranged in the base body and located between the inner side wall of the base body and the annular rotating disk; an observation port arranged on the base body, the observation port communicating with the inside of the base body.

[0007] Further, a first connection hole is provided on the seat body, a second connection hole is provided on the antifriction ring, the cover separating device further includes a fastener, and the fastener is inserted into the first connection hole and the second connection hole to detachably connect the antifriction ring and the seat body. A long hole for the fastener to pass through is provided on the annular rotating disc, and the long hole extends along the rotation direction of the annular rotating disc.

[0008] Further, the seat body includes an annular ring, a first annular side wall connected to the inner ring of the annular ring, and a second annular side wall connected to the outer ring of the annular ring. The surface of the first annular side wall facing away from the second annular side wall forms a lower cover hole, and the antifriction ring and the annular rotating disc are located in the accommodation groove surrounded by the annular ring, the first annular side wall, and the second annular side wall.

[0009] Further, the opening of the accommodation groove is arranged upward, and the antifriction ring is located between the annular ring and the annular rotating disc.

[0010] Further, the observation port is a through hole provided on the second annular side wall, and / or the cover separating device further includes a transparent dust-proof member provided at the observation port.

[0011] Further, the cover separating device further includes a vertical rod provided on the seat body and a transmission rod connected between the annular rotating disc and the cover separating main body. The vertical rod and the transmission rod are arranged at intervals, the cover separating main body is rotatably sleeved on the vertical rod, and the annular rotating disc rotates to drive the cover separating main body to swing through the transmission rod.

[0012] Further, the cover separating device further includes an antifriction ring provided between the vertical rod and the cover separating main body.

[0013] Further, the cover separating structure is arranged on the outer side of the seat body, the transmission rod extends out of the seat body to be connected to the cover separating main body, an avoidance long hole for the transmission rod to move is provided on the seat body, and a first avoidance notch for the transmission rod to move is provided on the antifriction ring.

[0014] Further, the cover separating structure is arranged on the outer side of the seat body, the vertical rod extends out of the seat body to be connected to the cover separating main body, an avoidance hole for the vertical rod to pass through is provided on the seat body, and a second avoidance notch for the vertical rod to pass through is provided on the antifriction ring.

[0015] Further, the openings of the first avoidance notch and the second avoidance notch are arranged in opposite directions, the side wall of the first avoidance notch protrudes towards the second avoidance notch, and the side wall of the first avoidance notch is in a "V" shape, and the side wall of the second avoidance notch is in a "W" shape.

[0016] Applying the technical solution of the present utility model, the cover separating device is arranged below the blanking opening of the cover body. The cover separating device includes: a base body, an annular rotating disk, a cover separating structure, a driving member, an anti-friction ring, and an observation port. The base body is connected below the blanking opening of the cover body, and the base body has a lower cover hole communicating with the blanking opening of the cover body. The annular rotating disk is rotatably arranged in the base body. The cover separating structure is swingably arranged on the base body. The cover separating structure includes a cover separating main body, an upper slicing piece and a lower slicing piece arranged on the cover separating main body. The upper slicing piece and the lower slicing piece are spaced apart and staggeredly arranged in the up-down direction. The annular rotating disk rotates to drive the cover separating structure to swing, so that the upper slicing piece and the lower slicing piece can extend into the lower cover hole. The driving member drives the annular rotating disk to rotate. The anti-friction ring is arranged in the base body and located between the inner side wall of the base body and the annular rotating disk. The observation port is arranged on the base body, and the observation port communicates with the inside of the base body. In this way, the driving member drives the annular rotating disk to rotate, so as to drive the cover separating structure to swing through the annular rotating disk. The cover separating structure swings to separate multiple stacked cover bodies into single cover bodies, and the single cover bodies can fall under the action of their own gravity. The cover separating main body swings, so that the upper slicing piece and the upper slicing piece can separate multiple stacked cover bodies into single cover bodies. Multiple stacked cover bodies are pressed on the upper slicing piece under the action of their own gravity. The cover separating main body swings along the first direction, so that one cover body can enter between the upper slicing piece and the lower slicing piece. The cover separating main body swings along the second direction opposite to the first direction, so that one cover body between the upper slicing piece and the lower slicing piece can fall from the lower slicing piece, so that the single cover bodies can fall for subsequent process use. The setting of the anti-friction ring can reduce the wear between the base body and the annular rotating disk, thereby reducing the possibility of generating metal debris and reducing the problem that the metal debris falls into the produced products and affects the qualification rate. Moreover, the setting of the observation port enables the operator to more easily observe the situation inside the base body, so that the operator can adjust in time according to the situation inside the base body, further reducing the problem that foreign matters inside the base body affect the qualification rate of the produced products. Therefore, the technical solution of the present application effectively reduces the problem that the metal debris generated by the friction between the annular rotating disk and the base body in the related art falls into the produced products and easily affects the qualification rate of the produced products. Description of the Drawings

[0017] The schematic diagrams in the specification forming a part of the present application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0018] Figure 1 It shows a three-dimensional structural schematic diagram of an embodiment of the cover separating device according to the present utility model;

[0019] Figure 2 It shows Figure 1 a three-dimensional structural schematic diagram of another perspective of the cover separating device;

[0020] Figure 3 shows the Figure 1 three-dimensional structure schematic diagram of the lid separating structure of the lid separating device;

[0021] Figure 4 shows the Figure 1 three-dimensional structure schematic diagram of the base body of the lid separating device;

[0022] Figure 5 shows the Figure 1 three-dimensional structure schematic diagram of the friction reducing ring of the lid separating device;

[0023] Figure 6 shows the Figure 1 three-dimensional structure schematic diagram of the annular rotating disc of the lid separating device.

[0024] Among them, the above-mentioned drawings include the following reference numerals:

[0025] 10. Base body; 11. Annular ring; 12. First annular side wall; 13. Second annular side wall; 14. First connection hole; 15. Lower cover hole; 16. Avoidance long hole; 17. Avoidance hole;

[0026] 20. Annular rotating disc; 21. Long hole;

[0027] 30. Lid separating structure; 31. Lid separating main body; 32. Upper slicing; 33. Lower slicing;

[0028] 40. Driving part;

[0029] 50. Friction reducing ring; 51. Second connection hole; 52. First avoidance notch; 53. Second avoidance notch;

[0030] 60. Fastener;

[0031] 70. Friction reducing ring; 71. Upright rod; 72. Transmission rod;

[0032] 80. Lid blanking port. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way restrictive of the present invention and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0034] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0035] Unless otherwise specifically stated, the relative arrangements of the components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0036] As Figures 1 to 6 shown, applying the technical solution of this embodiment, the lid separating device is arranged below the lid blanking port 80 of the lid body. The lid separating device includes: a base body 10, an annular rotating disk 20, a lid separating structure 30, a driving member 40, an antifriction ring 50, and an observation port. The base body 10 is connected below the lid blanking port 80 of the lid body, and the base body 10 has a lower lid hole 15 communicating with the lid blanking port 80. The annular rotating disk 20 is rotatably arranged in the base body 10. The lid separating structure 30 is swingably arranged on the base body 10. The lid separating structure 30 includes a lid separating main body 31, an upper slicing piece 32, and a lower slicing piece 33 arranged on the lid separating main body 31. The upper slicing piece 32 and the lower slicing piece 33 are spaced apart and staggered in the up-and-down direction. The annular rotating disk 20 rotates to drive the lid separating structure 30 to swing, so that the upper slicing piece 32 and the lower slicing piece 33 can extend into the lower lid hole 15. The driving member 40 drives the annular rotating disk 20 to rotate. The antifriction ring 50 is arranged in the base body 10 and is located between the inner side wall of the base body 10 and the annular rotating disk 20. The observation port is arranged on the base body 10, and the observation port communicates with the inside of the base body 10.

[0037] In this way, the driving member 40 drives the annular rotating disk 20 to rotate, so as to drive the cover separating structure 30 to swing through the annular rotating disk 20. The cover separating structure 30 swings to separate multiple stacked covers into single covers, and the single covers can fall under the action of their own gravity. The cover separating main body 31 swings so that the upper slicing member 32 and the lower slicing member 32 can separate multiple stacked covers into single covers. Multiple stacked covers are pressed on the upper slicing member 32 under the action of their own gravity. The cover separating main body 31 swings in the first direction so that one cover can enter between the upper slicing member 32 and the lower slicing member 33. The cover separating main body 31 swings in the second direction opposite to the first direction, so that one cover between the upper slicing member 32 and the lower slicing member 33 can fall from the lower slicing member 33, so that the single covers can fall for subsequent process use. The setting of the antifriction ring 50 can reduce the wear between the seat body 10 and the annular rotating disk 20, thereby reducing the possibility of generating metal debris and reducing the problem that metal debris falls into the produced products and affects the qualification rate. Moreover, the setting of the observation port enables the operator to more easily observe the situation inside the seat body 10, so that the operator can adjust in time according to the situation inside the seat body 10, further reducing the problem that foreign matters inside the seat body 10 affect the qualification rate of the produced products. Therefore, the technical solution of this embodiment effectively reduces the problem that metal debris generated by the friction between the annular rotating disk and the seat body in the related art falls into the produced products and easily affects the qualification rate of the produced products.

[0038] In this embodiment, the antifriction ring 50 is made of a polymer material, has high wear resistance, can reduce mechanical wear, and is not easy to generate foreign matters during relative movement. The driving member 40 is a driving cylinder. The cylinder body of the driving cylinder is hinged to the seat body 10, and the telescopic rod of the driving cylinder is hinged to the annular rotating disk 20. The telescopic rod of the driving cylinder expands and contracts to drive the annular rotating disk 20 to rotate reciprocally.

[0039] As Figures 1 to 6 shown, a first connection hole 14 is provided on the seat body 10, and a second connection hole 51 is provided on the antifriction ring 50. The cover separating device further includes a fastener 60. The fastener 60 is inserted into the first connection hole 14 and the second connection hole 51 to detachably connect the antifriction ring 50 to the seat body 10. The settings of the first connection hole 14, the second connection hole 51 and the fastener 60 enable the fastener 60 to be more conveniently disassembled on the seat body 10, so as to facilitate the disassembly and replacement of the antifriction ring 50. By regularly replacing the antifriction ring 50, the possibility of generating foreign matters due to friction inside the seat body 10 is further reduced. A long slot 21 for the fastener 60 to pass through is provided on the annular rotating disk 20. The long slot 21 extends along the rotation direction of the annular rotating disk 20. The setting of the long slot 21 can avoid the fastener 60 and facilitate the rotation of the annular rotating disk 20.

[0040] As Figures 1 to 6As shown, the base body 10 includes an annular ring 11, a first annular side wall 12 connected to the inner ring of the annular ring 11, and a second annular side wall 13 connected to the outer ring of the annular ring 11. The surface of the first annular side wall 12 facing away from the second annular side wall 13 forms a lower cover hole 15. The antifriction ring 50 and the annular rotating disk 20 are located in the receiving groove surrounded by the annular ring 11, the first annular side wall 12, and the second annular side wall 13. The structures of the first annular side wall 12, the second annular side wall 13, and the annular ring 11 are simple and convenient for processing. The receiving groove can limit the rotation range of the annular rotating disk 20, reduce the offset of the annular rotating disk 20 during rotation, and further reduce the friction and collision between the annular rotating disk 20 and the base body 10.

[0041] As Figures 1 to 6 shown, the opening of the receiving groove is arranged upward, and the antifriction ring 50 is located between the annular ring 11 and the annular rotating disk 20. In this way, under the action of its own gravity, the annular rotating disk 20 can press on the upper side of the antifriction ring 50, making the rotation of the annular rotating disk 20 more stable and reducing the friction between the annular rotating disk 20 and the annular ring 11. The upward arrangement of the opening of the receiving groove is convenient for the operator to replace the antifriction ring 50.

[0042] As Figures 1 to 6 shown, the observation port is a through hole provided on the second annular side wall 13. Setting the observation port on the second annular side wall 13 is convenient for the operator to observe the edges of the annular rotating disk 20 and the antifriction ring 50, so that the operator can make timely adjustments. The sub-cover device further includes a transparent dust-proof member provided at the observation port. The setting of the transparent dust-proof member can prevent external impurities from entering the base body 10.

[0043] In other embodiments, the observation port is a through hole provided on the second annular side wall 13. Or, the sub-cover device further includes a transparent dust-proof member provided at the observation port.

[0044] As Figures 1 to 6 shown, the sub-cover device further includes a vertical rod 71 provided on the base body 10 and a transmission rod 72 connected between the annular rotating disk 20 and the sub-cover main body 31. The vertical rod 71 and the transmission rod 72 are arranged at intervals, and the sub-cover main body 31 is rotatably sleeved on the vertical rod 71. The annular rotating disk 20 rotates to drive the sub-cover main body 31 to swing through the transmission rod 72. The structures of the vertical rod 71 and the transmission rod 72 are simple and convenient for the transmission between the annular rotating disk 20 and the sub-cover main body 31.

[0045] As Figures 1 to 6As shown, the sub-cover device further includes an anti-friction ring 70 disposed between the vertical rod 71 and the sub-cover main body 31. The setting of the anti-friction ring 70 can reduce the friction between the vertical rod 71 and the sub-cover main body 31, avoid the possibility of wear caused by relative rotation between the vertical rod 71 and the sub-cover main body 31, further reduce the possibility of foreign matter generation, and improve the qualified rate of the produced products.

[0046] As Figures 1 to 6 shown, the sub-cover structure 30 is disposed outside the seat body 10, and the transmission rod 72 extends outside the seat body 10 to be connected to the sub-cover main body 31. The seat body 10 is provided with an avoidance long slot 16 for the transmission rod 72 to move. The setting of the avoidance long slot 16 can avoid the swing of the transmission rod 72, so that the transmission rod 72 can drive the sub-cover main body 31 to swing better. The anti-friction ring 50 is provided with a first avoidance notch 52 for the transmission rod 72 to move. The setting of the first avoidance notch 52 can avoid the swing of the transmission rod 72, so that the transmission rod 72 can drive the sub-cover main body 31 to swing better.

[0047] As Figures 1 to 6 shown, the sub-cover structure 30 is disposed outside the seat body 10, and the vertical rod 71 extends outside the seat body 10 to be connected to the sub-cover main body 31. The seat body 10 is provided with an avoidance hole 17 for the vertical rod 71 to pass through, and the anti-friction ring 50 is provided with a second avoidance notch 53 for the vertical rod 71 to pass through. The setting of the avoidance hole 17 can enable the vertical rod 71 to be better connected to the seat body 10. The second avoidance notch 53 can avoid the vertical rod 71, so that the vertical rod 71 can be connected to the seat body 10.

[0048] As Figures 1 to 6 shown, the openings of the first avoidance notch 52 and the second avoidance notch 53 are arranged in opposite directions, and the side wall of the first avoidance notch 52 protrudes towards the second avoidance notch 53. And the side wall of the first avoidance notch 52 is in a "V" shape, and the side wall of the second avoidance notch 53 is in a "W" shape. The structures of the first avoidance notch 52 and the second avoidance notch 53 are simple and convenient for processing. And arranging the openings of the first avoidance notch 52 and the second avoidance notch 53 in opposite directions makes the structure on the anti-friction ring 50 more compact, convenient for processing, and also convenient for the arrangement of the vertical rod 71 and the transmission rod 72.

[0049] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description. Without contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present utility model; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0050] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "upper...", etc. can be used here to describe the spatial positional relationship between a device or feature shown in the drawings and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation other than the orientation described in the drawings for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned as "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0051] In addition, it should be noted that using words such as "first", "second", etc. to limit components is only for the convenience of distinguishing the corresponding components. Without otherwise stating, the above words have no special meaning. Therefore, it should not be construed as a limitation on the protection scope of the present utility model.

[0052] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A split cover device is arranged below the blanking opening (80) of the cover body, and is characterized in that, The sub-cover device includes: A base body (10), connected below the blanking port (80) of the cover body. The base body (10) has a lower cover hole (15) communicating with the blanking port (80) of the cover body; An annular rotating disk (20), rotatably arranged inside the base body (10); A sub-cover structure (30), swingably arranged on the base body (10). The sub-cover structure (30) includes a sub-cover main body (31), an upper slicing piece (32) and a lower slicing piece (33) arranged on the sub-cover main body (31). The upper slicing piece (32) and the lower slicing piece (33) are spaced apart and staggered in the up-down direction. The annular rotating disk (20) rotates to drive the sub-cover structure (30) to swing, so that the upper slicing piece (32) and the lower slicing piece (33) can extend into the lower cover hole (15); A driving member (40), driving the annular rotating disk (20) to rotate; A friction-reducing ring (50), arranged inside the base body (10) and located between the inner side wall of the base body (10) and the annular rotating disk (20); An observation port, arranged on the base body (10), and the observation port communicates with the inside of the base body (10).

2. The split cover device according to claim 1, characterized in that, A first connection hole (14) is arranged on the base body (10), a second connection hole (51) is arranged on the friction-reducing ring (50). The sub-cover device further includes a fastener (60). The fastener (60) passes through the first connection hole (14) and the second connection hole (51) to detachably connect the friction-reducing ring (50) to the base body (10). A long slot (21) for the fastener (60) to pass through is arranged on the annular rotating disk (20), and the long slot (21) extends along the rotation direction of the annular rotating disk (20).

3. The sub-cover device according to claim 1, characterized in that, The base body (10) includes an annular ring (11), a first annular side wall (12) connected to the inner ring of the annular ring (11), and a second annular side wall (13) connected to the outer ring of the annular ring (11). The surface of the first annular side wall (12) facing away from the second annular side wall (13) forms the lower cover hole (15). The friction-reducing ring (50) and the annular rotating disk (20) are located in the accommodation groove formed by the annular ring (11), the first annular side wall (12) and the second annular side wall (13).

4. The sub-cover device according to claim 3, characterized in that, The opening of the accommodation groove is arranged upwards, and the friction-reducing ring (50) is located between the annular ring (11) and the annular rotating disk (20).

5. The lid separating device according to claim 3, wherein, The observation port is a through hole arranged on the second annular side wall (13), and / or the sub-cover device further includes a transparent dust-proof member arranged at the observation port.

6. The split cover device according to claim 1, characterized in that, The sub-cover device further includes a vertical rod (71) disposed on the base body (10) and a transmission rod (72) connected between the annular rotating disc (20) and the sub-cover main body (31). The vertical rod (71) and the transmission rod (72) are spaced apart. The sub-cover main body (31) is rotatably sleeved on the vertical rod (71). The annular rotating disc (20) rotates to drive the sub-cover main body (31) to swing through the transmission rod (72).

7. The sub-cover device according to claim 6, wherein The sub-cover device further includes an anti-friction ring (70) disposed between the vertical rod (71) and the sub-cover main body (31).

8. The sub-cover device according to claim 6, characterized in that, The sub-cover structure (30) is disposed outside the base body (10). The transmission rod (72) extends out of the base body (10) to be connected to the sub-cover main body (31). An avoidance long slot hole (16) for avoiding the movement of the transmission rod (72) is disposed on the base body (10). A first avoidance notch (52) for avoiding the movement of the transmission rod (72) is disposed on the anti-friction ring (50).

9. The split cover device according to claim 8, wherein, The vertical rod (71) extends out of the base body (10) to be connected to the sub-cover main body (31). An avoidance hole (17) for the vertical rod (71) to pass through is disposed on the base body (10). A second avoidance notch (53) for the vertical rod (71) to pass through is disposed on the anti-friction ring (50).

10. The sub-cover device according to claim 9, characterized in that, The openings of the first avoidance notch (52) and the second avoidance notch (53) are arranged in opposite directions. The side wall of the first avoidance notch (52) protrudes towards the second avoidance notch (53). The side wall of the first avoidance notch (52) is in a "V" shape, and the side wall of the second avoidance notch (53) is in a "W" shape.

Images